“I have little doubt that she is an enemy, and probably well acquainted with the reefs. If so, she will stand in near enough to attack the fort; or if its existence is not known, the Spaniards will send their boats on shore, expecting without difficulty to make us all prisoners,” answered the second lieutenant.

“They will find that they are mistaken,” observed the commander. “Get all the boats hauled up and placed under shelter behind the rocks, Mr Billhook. Call the men to their quarters, see that the guns are ready for action, and serve out arms and ammunition. We shall somewhat surprise the enemy if they attempt to land, for they are not likely to know of the existence of the fort, and will probably at once send their boats on shore, expecting to carry us off without difficulty.”

The men, who had, like their officers, been watching the approach of the stranger, were well pleased when they heard that she was supposed to be an enemy, and were eager for a fight. It would be a pleasant variety to the monotony of their existence, and no one entertained a doubt but that they should beat her off. The rays of the setting sun, glancing on her side as it rose above the water, showed her to be a large frigate. Though her flag could not be seen, not a doubt was entertained that she was Spanish. The wind, however, had fallen, and she was still some three or four miles beyond the outer reefs; when darkness settled down on the ocean, she was seen to haul her wind, apparently to lay to till daylight. The night was unusually dark, so that nothing could be seen of her.

The men were kept under arms, and sentries were posted round the island at the different points at which boats could land, to give notice should any approach, in which case the sentries were directed to fire off their muskets and retire to the fort. The officers continually went their rounds to ascertain that the men were awake and attending to their duty. Hour after hour passed by, still no sounds were heard to indicate the approach of an enemy.

It was within an hour of dawn, when Mr Foley, who having just visited the western side of the island, had returned to the fort, heard a musket fired, and presently afterwards a sentry came running up. “I caught the sound of the splash of the oars in the water, sir,” he said; “they cannot be far off. They hope to catch us asleep, for they seem to be making as little noise as possible.”

As the man was speaking, another sentry’s musket was heard to go off. He quickly came up and gave the same report as the first. The garrison were at once ordered to stand to their guns, and the two sentries were sent off to bring in their comrades.

“My lads, we shall probably be attacked in a few minutes by Spaniards: perhaps there may be soldiers as well as seamen among them, but I know that I can depend on you to beat them off,” exclaimed the commander. “Not a gun or musket must be fired until I give the order. They may or may not know, of the existence of our fort; possibly they suppose that we are without defences, and expect easily to make us prisoners. Don’t cheer now—let not a sound be heard till they get close up to us; they perhaps expect to surround our camp, but as they know we are awake, they cannot hope to capture us without a struggle, and will come on cautiously.”

The guns had been loaded with grape and canister. The men not required to work them were armed with muskets, so that should even the greater part of the frigate’s crew have been sent on shore, the shipwrecked party might well hope to drive them back.

The commander had taken up a position from whence he could command a view of the approaches to the fort on every side; and other sharp eyes were likewise looking out. So long a time elapsed that he began to fancy that the sentries had given a false alarm, and he was on the point of despatching a party down to the nearest landing-place, when he caught sight of a body of men emerging from the gloom. They approached cautiously, evidently doubtful of the reception they might meet with.

The seamen stood at their guns with the matches in their hands concealed from view; perfect silence reigned throughout the fort. The enemy crept steadily on, not knowing how near they were to their expected prey, the outline of the fort not being yet visible to them through the darkness. Commander Olding judged from the ground they covered that there must be between two and three hundred men—double the number of his own crew. Suddenly they halted, probably having just then discovered the fort. Two or three figures, apparently those of officers, were seen moving in front of them; then a shout was heard, and the whole line, advancing, fired their matchlocks, the bullets flying thick as hail over the fort.